Cloth pinning device



I. KRUGER Sept. l1, 1945.

CLOTH PINNING DEVICE Filed March 24, 1945 www i www@ e Patented Sept. 11, 1945 UNITED STATES PATENT OFFICE oinri'rv puntino` nEvIoE Isdor Kruger, Brookline, Mass. l 'Application March 24, 19415, Serial No2 5847.517" A y 6 Claims.

This invention relates to fabric pinning machines and pertains more particularly to a pinning or stapling device for temporarily attaching embroidery fabric to a backing vsheet of buckram or the like while the designiimprinted on the fabric is being embroidered.

The principal purpose of the invention is to provide a pinning machine adapted to form a pinched fold in the limp fabric and its relatively stiff backing sheet, and simultaneously to pass a pin or staple through the fold, thereby fastening the two sheets of material together art selected points around the margin of the embroidery fabric in such a manner thatthe pin or staple does not damage the material andmay readily be removed by hand or by a pincer or other convenient implement.

A further object of the invention is to provide a device which may be employed for pinning or stapling two pieces of flexible material without requiring any special support beneath the lower layer, thereby permitting the machine to be used in fastening materials resting on a relatively soft surface and even on a persons body.

Recommended embodiments of the invention are illustrated in the accompanying drawing, but it will be understood that the structural details of the device herein illustrated and described may be varied to suit particular purposes 'and conditions without departing from the essence of this invention as set forth in the appended claims.

y In the drawing,

Fig. 1 is a plan view of a piece of embroidery fabric fastened to a backing sheetof buckram by the use of the improved machine;

Fig. 2 is a side elevation of the improved pinning machine, with certain parts shown insection; I

Fig. 3 is an end view of the machine looking to the right of Fig. 2; f

Fig.y 4 is an enlarged sectional perspective showing the aflixation of the pin or staple to a fold formed in the two layers of material by the machine shown in Figs. 2 and 3;

Fig. 5 is a detail sectional view of a modified form of machine adapted for applying a hairpin type of staple without bending the ends of the pin;

Fig. 6 is a detail view of the pin or staple shown in Fig. 5;

Fig. l is a fragmentary plan view of the upper sheet of the materials fastened by the lpin of Fig. 6I, after removal from the machine; and

Fig. 8 is a detail fragmentary elevation of the g ,Y

` "55 of staples.

anvil portion of the machineshown "inFig. 2.-

lo v the' embroidery fabric The machinechosenfor the purpose of illustrating in Figs. 2, 3 and 8 comprises a frame II having abase portion I2 and an upstanding portion I3 ;y staplingmechanism I4 having a back s member 1VI5 suitably mounted, as by soldering,

riveting or bolting, to the upright member I3 of the frame; and a hand operated lever I6, pivoted to the frame at I'I, Afor actuating the stapling mechanism: 4The bed memberl I5 of said mechalonism has an Vanvil portion I8 at the bottom or outer end thereof, and said anvil portion has one or moreV downwardly projecting prongs I9 adapted to 'impinge the surface of the materials to which the baseA l2 is applied. As illustrated in Fig. 2, i5! and'fbacking sheet 2U are laid upon a table or other support 2|, and the base I2 of the machine is applied to the fabric as thus supported; but it will be evident, as aforesaid; that the machine may be used without the necessity of furnishing atable or other flat and rigid support. Itwill also be apparent that the provision of an elongate base member is not es- '.sential to the operation of the device, in many cases.

The pinning or'stapling mechanism Ill .com-

prises an elongate receptacle 122 pivoted at its upper end tothe lbed member I5 and'containing a stack-.0f U-.shaped pins or'staples, a follower 24, and a springf25 for urging the staples toward the bottom ofthe receptaclen or pin. holder, so

that they. may be. forced transversely through `an opening 25 in the back of the receptacle by a plunger 21, substantially inthe manner exemplified by the common forms of. paper stapling machines.

As in such machines, the plunger 21 is carried at the end of a cover 28v hinged at 29 to the receptacle and to the'bed member I5, and said cover is normally held inthe position shown in Fig. 2

` 40 by a spring 30, withthe plunger 21 adjacent the back of the lowermost staple or pin in the stack 23. The vbottom of the pin holder 22 Vhas one or -more depending prongs SI, directedv toward the anvil I8 and adapted'to impinge the fabric layers andform afold therein, between the .anvil and 4the staples, when the stapling mechanism is rclosed against theanvil by operating the lever It. A loop or bail 32 is hinged to the lever I5 at 33 and straddles 'the staplingmechanism, the loop being removably engaged under a catch 35 on Ythe cover'memberZ'B, wheni'the machine is to be used. Theiloop is disengaged yfrom the 'catch to permit the cover. toV be opened when it is desired to refill the pin holder with a new stack Yand the .ibase 45 of the The mechanical operation of the stapling mechanism is similar to that of the ordinary paper stapling machine. Pressure applied to the back of the cover 28, as by the lever I6 and bail 32 or by the other actuating devices, closes the cover on the pin holder 22 and moves the end of the latter toward the end of the bed or back member I5, thereby causing the plunger 2l to expel the outermost pin of the holder and force its points through 4the fabric fold 38 and toward the anvil I8. Y

The anvil of the machine shown in Fig. 2 has a pair of outer slots 36 and a pair of beveled anvil surfaces 31 leading thereto, which tend Ato spread the points of the staple outwardly under pressure of the stapling mechanism, sogthat the.

points lie flat against the back of the Afold 38 without reentering the backing, as shown in Fig. 4.

Actuation of the improved pinning machine causes the fabric to be caught by the prongs I9 and -3I andito be pinched Vinto a fold 38, :as shown in Fig. 2 (the stapling mechanism Ybeing opened in the figure more clearly to illustrate the formation of the fold) so that the kdouble ended'pinor staple 39 (Fig. .4) is forced through the four layers of the folded materials and its points are divel-ged by the inclined Walls 31, as aforesaid. The angle =of bend of the pin tips 40 is obviously a matter of choice, but it is preferred that the tips be not bent rearwardly into the back Vof the fold as isrcommon in paper fastening stapling machines) thereby toavoid injury tothe embroidery fabric I9 and to permit more easy removal of the pin when the embroidery of the design 4I (Fig. 1) has been completed. Y Y

It will be understood that the buckram backing 20 is dissolved by chemical action in accordance with well known methods to free the embroidery fabric I9, after the embroidery has been ycompleted and the fastenings have been removed.

In the modified form shown in Figs. 5, 6 Yand 7, the anvil portion 42 of the back member `43 of the stapling mechanism has through openings M,

so .that a hairpin-like pin 48 may be pushed through the rfold 49 of the Vsuperposed sheets 50 and I, without bending the .pointsof the pin. In this arrangement the fold maybe .pulled out flatwise, as shown in Fig. 7, after the pin` has been inserted, and the loop of Athe pin .may be withdrawn slightly .so that it lies flat -on the fabric.

-The pin 48 is obviouslyvery easy to remove .and

it may, if desired, have a loop 52 .or other head member, to facilitate the Withdrawal bythe .fingers.

Other `variations of the structure of the machine herein illustrated and described may be practiced without departing from the essence of this invention which consists in providing a rpinning machine of the paper stapling type with cloth-gripping prongs or projections, formed on the back or anvil portion of the stapling mechanism and on the Vpin holder, respectively, and depending from the outer ends impinge two superposed layers of fabric and pinch a fold therein when the pin holder is closed against the back or anvil by suitable actuating means. As above indicated, the provision of a heavy frame having a base I2, for many purposes for which the device is suitable; and other devices for actuating the pin holder and its cover may be utilized within the intended scope of this invention.

Iclaim:

frame vIIS has .a slot 41,

thereof, thereby to is not essential i 1. In a fabric pinning machine having a back member and a pin holder and cover therefor pivoted to the back member, the cover having a plunger engageable with the outermost pin of a stack Within the holder and adapted to expel said pin from the stack toward the back member when the cover and holder are pressed toward said member, fabric-gripping means comprising outwardly directed prongs on the end of said back member and on the end of said cover for impinging a pair of superposed fabric layers to which said ends are applied, and means for pressing the cover and "pin holder toward said back member, thereby to pinch a fold of .itween said ends and force the Aing .an 'anvil portion disposed said fabric layers between said ends and force the points of a pin therethrough.

2. In a fabric pinning machine having a back member and a pin holder and cover therefor pivoted to the back member, the cover having a plunger engageable with the outermost pin of a stack within the holder and adapted to expel said pin from the stack toward the back member when the cover and holder are pressed toward Asaid member, .fabric-gripping means comprising outwardly directed prongs on the end of said back member and on the end of said cover for impinging a pair of superposed fabric layers to which said ends are applied, and means for pressing the cover and pin holder toward said back member. thereby to pinch a fold of said fabric layers between said ends and force the points of a .double-pointed pin therethrough, the back member having an anvil portion disposed opposite the end of the pin holder and having a beveled surface engageable by the pin points and adapted to deflect said points outwardly against the back of the .folded material.

3. In a fabric pinning machinehaving a .back member and a pin holder and cover therefor .piv- `oted Vto the back member, the cover having a plunger engageable with the routermost pin of a stack Within the holder and adapted to eXpel said Din from thestack toward the back member when .the vcover and holder are pressed toward said member, fabric-gripping means comprising outwardly directed prongs on the end of said back member and ron the end of said cover for imping- 4a pair of superposed fabric layers to which said ends are applied, and means for pressing the 'cover and pin holder toward said back member, thereby to pinch a fold of said fabric layers bepoints ,of a doubleback member havopposite the end of lthe pinholder and having openings therethrough to receive the points lof the pin.

4. A pinning machine of the character depointed pin therethrough, the

-scrilbed -comprising a frame having albase adaptcover having a plunger adapted to expel the bottommost pin of the stack, -t'he back member having an yanvil provided with outwardly projecting prongs adapted to impinge the fabric sheets 'when the base ofthe frame is applied thereto, and the holder having an outwardly projecting prong adapted to impinge said sheets at a point distant .from the anvil, thereby to :form `a Vfold in said sheets when 4the holder is moved toward the anvil, and means associated with said .frame and cover for pressing the cover and the `pin holder toward the anvil to form said fold and to force said bottommost pin therethrough.

5. A pinning machine of the character described comprising a frame having a base adapted to be applied to a pair of superposed sheets of ilexilble material, a stapling device having a back member mounted on said frame, a holder for a stack of U-shaped pins hinged to said back member, and a cover hinged to said holder, said cover having a plunger adapted to expel the bttommost pin of the stack, the back member having an .anvil vprovided with outwardly projecting prongs adapted to impinge the'fabric sheets when the base of the frame is applied thereto, and the holder having an outwardly projecting prongadapted to im-pinge said sheets at a point distant from the anvil, thereby to form a fold in said sheets when the holder is moved toward the anvil, and means associated with said frame and cover for pressing the cover and the pin holder toward the anvil to form said fold and to force said bottommost pin through said fold, said anvil having inclined surfaces engageable by the tips of the pin to spread the same outwardly in opposite directions.

yof flexible material, a

6. A pinning machine of the character described comprising a frame having a base adapted to lbe yapplied to a pair of superposed sheets stapling device having a back memlber mounted on said frame, a holder for a stack of U-shaped pins hinged to said back member and a cover hinged to said holder, said cover having a plunger adapted to expel the bottommost pin of the stack, the back member having an anvil provided with outwardly projecting prongs adapted to impinge the fabric sheets when the base of the frame is applied thereto, and the holder having an outwardly projecting prong adapted to mpinge said sheets at a point distant from the anvil, thereby to form a fold in 'said sheets when the holder is moved toward the anvil, and means associated with said frame and cover ffor pressing the cover and the pin holder toward the anvil to for-m said fold and to through said fold, said anvil and the frame having openings therein for receiving the prongs of the pin so that the latter remain straight.

ISIDOR KRUGER. 

